Dte Connections; Network Diagnostic Connection - Paradyne COMSPHERE
3610 User Manual

DTE Connections

The distance between the DSU and the DTE must be
within the EIA-232 or V.35 interface limits. Refer to
Appendix F for LADS connection distances.
For the EIA-232 connector:
The typical maximum distance is 50 feet at data
rates no greater than 19.2 kbps.
For distances greater than 50 feet or data rates
higher than 19.2 kbps, use short, high quality cable
with low capacitance and a DTE capable of
supporting the distance and data rate.
As specified in EIA-232-D, ensure that the distance
is not greater than 50 feet and the effective shunt
capacitance of the circuit does not exceed 2500 pF.
Calculate the cable capacitance per foot and
multiply by the number of feet of cable.
When Port 1 requires a speed higher than 19.2 kbps,
the port interface should be set to V.35. For all models
using the V.35 connector, the maximum distance
recommended between the DSU and the DTE is
1000 feet.
To install the Model 3610 DTE connection:
Procedure
1. Connect the plug end of the DTE cable to the
proper port on the back panel of the DSU (EIA232
or V.35). Tighten the two holding screws, if
present, to secure the connector.
POWER LINE BACKUP CC/DC
Power Backup
Line CC/DC
3610-A2-GB46-60
V.35
EIA 232
V.35 EIA 232
495-14704
December 1996
NOTE
If connecting the DTE to the
V.35 connector, set the DTE Port
in General Configuration
Options to V.35 so the DSU can
communicate with the DTE
(Table 4-4). The default for this
configuration option is EIA232.
2. Connect the other end of the cable to the
appropriate port on the DTE. Tighten the two
holding screws, if present.
3. Perform Local Loopback (LL) and DTE
Loopback tests. Refer to the Test Branch section
of Chapter 3.
Network Diagnostic
Connection
A hubbing device and an M6BJ cable are needed to
connect the control DSU to a 6700 or 6800 Series NMS.
The hubbing device provides two 8-pin modular jacks for
diagnostic channel (DC) and control channel (CC)
connections.
NOTE
When installing 3600 Series
DSUs and 3400 Series or
DATAPHONE II modems on the
same diagnostic channel, install
the DSU ahead (upstream) of
the modems. This ensures that
the DSU maintains contact if the
modem loses power.
Model 3610 Installation
2-9